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2 years ago

I need help with number 5 :( pls help

Mathematics

1 answer:

jok3333 [9.3K]2 years ago

7 0

Answer:

the answer is c

Step-by-step explanation:

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The product of five rational numbers is positive. At most, of these rational numbers can be negative

Ivanshal [37]

Answer: A. 1

Step-by-step explanation:

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2 years ago

Hurry <br> due today <br> please <br> thanks

drek231 [11]

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2 years ago

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Verify a(b-c)=ab-ac for a=1.6;b=1/-2;& c=-5/-7

harina [27]

Given:

$a=1.6,b=\dfrac{1}{-2},c=\dfrac{-5}{-7}$

To verify:

$a(b-c)=ab-ac$ for the given values.

Solution:

We have,

$a=1.6,b=\dfrac{1}{-2},c=\dfrac{-5}{-7}$

We need to verify $a(b-c)=ab-ac$ .

Taking left hand side, we get

$a(b-c)=1.6\left(\dfrac{1}{-2}-\dfrac{-5}{-7}\right)$

$a(b-c)=1.6\left(-\dfrac{1}{2}-\dfrac{5}{7}\right)$

Taking LCM, we get

$a(b-c)=1.6\left(\dfrac{-7-10}{14}\right)$

$a(b-c)=\dfrac{16}{10}\left(\dfrac{-17}{14}\right)$

$a(b-c)=\dfrac{8}{5}\left(\dfrac{-17}{14}\right)$

$a(b-c)=-\dfrac{68}{35}\right)$

Taking right hand side, we get

$ab-ac=1.6\times \dfrac{1}{-2}-1.6\times \dfrac{-5}{-7}$

$ab-ac=-\dfrac{16}{20}-\dfrac{8}{7}$

$ab-ac=-\dfrac{4}{5}-\dfrac{8}{7}$

Taking LCM, we get

$ab-ac=\dfrac{-28-40}{35}$

$ab-ac=\dfrac{-68}{35}$

Now,

$LHS=RHS$

Hence proved.

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2 years ago

Part of the population of 6,750 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 3 o

Anastasy [175]

Answer:

405

Step-by-step explanation:

We can use a ratio to solve

3 infected x infected

------------------ = ----------------

50 sampled 6750 population

Using cross products

3*6750 = 50x

Divide each side by 50

3*6750/50 = x

405

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Linda rides her bike at a constant rate of 2 miles every 5 minutes. What is the slope of this proportional relationship?

Ne4ueva [31]

Answer:

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Step-by-step explanation:

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